CoGeNT, DAMA, and Light Neutralino Dark Matter
arXiv:1009.0549 · doi:10.1016/j.physletb.2011.09.081
Abstract
Recent observations by the CoGeNT collaboration (as well as long standing observations by DAMA/LIBRA) suggest the presence of a -10 GeV dark matter particle with a somewhat large elastic scattering cross section with nucleons ( cm).Within the context of the minimal supersymmetric standard model (MSSM), neutralinos in this mass range are not able to possess such large cross sections, and would be overproduced in the early universe. Simple extensions of the MSSM, however, can easily accommodate these observations. In particular, the extension of the MSSM by a chiral singlet superfield allows for the possibility that the dark matter is made up of a light singlino that interacts with nucleons largely through the exchange of a fairly light (30-70 GeV) singlet-like scalar higgs, $\hi$. Such a scenario is consistent with all current collider constraints and can generate the signals reported by CoGeNT and DAMA/LIBRA. Furthermore, there is a generic limit of the extended model in which there is a singlet-like pseudoscalar higgs, $\ai$, with $\mai\sim \mhi$ and in which the and $b\anti b, s\anti s$ coupling magnitudes of the $\hi$ and $\ai$ are very similar. In this case, the thermal relic abundance is automatically consistent with the measured density of dark matter if $\mchi$ is sufficiently small that $χ^0χ^0\to b\anti b$ is forbidden.
6 pages, published version
References in corpus (23)
- Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
- Dark Matter Annihilation in The Galactic Center As Seen by the Fermi Gamma Ray Space Telescope
- Results from a Search for Light-Mass Dark Matter with a P-type Point Contact Germanium Detector
- Search for Neutral MSSM Higgs Bosons at LEP
- PAMELA results on the cosmic-ray antiproton flux from 60 MeV to 180 GeV in kinetic energy
- Search for an Annual Modulation in a P-type Point Contact Germanium Dark Matter Detector
- Hadronic Uncertainties in the Elastic Scattering of Supersymmetric Dark Matter
- Deducing the nature of dark matter from direct and indirect detection experiments in the absence of collider signatures of new physics
- Exothermic Dark Matter
- Low-threshold analysis of CDMS shallow-site data
- XENON10/100 dark matter constraints in comparison with CoGeNT and DAMA: examining the Leff dependence
- Dark Light Higgs
- DAMA and WIMP dark matter
- New Limits on Dark Matter from Super-Kamiokande
- Indirect detection of light neutralino dark matter in the NMSSM
- Light Neutralinos with Large Scattering Cross Sections in the Minimal Supersymmetric Standard Model
- Extended MSSM Neutralinos as the Source of the PAMELA Positron Excess
- Constraints on Light WIMP candidates from the Isotropic Diffuse Gamma-Ray Emission
- Comments on "First Dark Matter Results from the XENON100 Experiment"
- Light WIMP Searches: The Effect of the Uncertainty in Recoil Energy Scale and Quenching Factor
- Light neutralino dark matter with a very light Higgs for CoGeNT and DAMA/LIBRA data
- CoGeNT, DAMA, and Neutralino Dark Matter in the Next-To-Minimal Supersymmetric Standard Model
- Lowering the low-energy threshold of xenon detectors
Cited by in corpus (34)
- Extended gamma-ray emission from Coy Dark Matter
- Light dark matter and dark force at colliders
- Dark Matter investigation by DAMA at Gran Sasso
- WMAP7 and future CMB constraints on annihilating dark matter: implications for GeV-scale WIMPs
- Low-mass right-handed sneutrino dark matter: SuperCDMS and LUX constraints and the Galactic Centre gamma-ray excess
- XENON100 Implications for Naturalness in the MSSM, NMSSM and lambda-SUSY
- Extracting limits on Dark Matter annihilation from gamma-ray observations towards dwarf spheroidal galaxies
- Light Dark Matter and the Electroweak Phase Transition in the NMSSM
- A Bayesian view of the current status of dark matter direct searches
- LHC constraints on light neutralino dark matter in the MSSM
- First data from DM-Ice17
- Fits to the Fermi-LAT GeV excess with RH sneutrino dark matter: implications for direct and indirect dark matter searches and the LHC
- Light NMSSM Neutralino Dark Matter in the Wake of CDMS II and a 126 GeV Higgs
- Light Neutralino Dark Matter in the pMSSM: Implications of LEP, LHC and Dark Matter Searches on SUSY Particle Spectra
- Very light right-handed sneutrino dark matter in the NMSSM
- Probing the two light Higgs scenario in the NMSSM with a low-mass pseudoscalar
- Revisiting light neutralino scenarios in the MSSM
- Light dark matter in leptophobic Z' models
- Testing the light dark matter scenario of the MSSM at the LHC
- Particle Physics Implications and Constraints on Dark Matter Interpretations of the CDMS Signal
- Cosmic-ray antiproton constraints on light singlino-like dark matter candidates
- Light neutralino dark matter in the MSSM and its implication for LHC searches for staus
- Status of low mass LSP in SUSY
- Loop-induced photon spectral lines from neutralino annihilation in the NMSSM
- Electroweak Phase Transition in the U(1)' MSSM
- CoGeNT, DAMA, and Neutralino Dark Matter in the Next-To-Minimal Supersymmetric Standard Model
- An optimistic CoGeNT analysis
- Pulse-shape discrimination between electron and nuclear recoils in a NaI(Tl) crystal
- Goldstone Fermion Dark Matter
- Search at the CERN LHC for a light neutralino of cosmological interest
- Perspectives on a Supersymmetric Extension of the Standard Model with a Higgs Triplet and a Singlet at the LHC
- A light scalar WIMP through the Higgs portal?
- The Forward-Backward Top Asymmetry in a Singlet extension of the MSSM
- Light neutralino dark matter in light Higgs scenario related with the CoGeNT and DAMA/LIBRA results